#include <signal.h>
#include "../ourhdr.h"

static void sig_usr(int);
/***
 * 信号基础
 **/
int main(void)
{
    if(signal(SIGUSR1, sig_usr) == SIG_ERR)
    {
        err_sys("can't catch SIGUSR1");
    }
    if(signal(SIGUSR2, sig_usr) == SIG_ERR)
    {
        err_sys("can't catch SIGUSR2");
    }

    for(;;)
    {
        pause();
    }
}

static void sig_usr(int signo)
{
    if(signo == SIGUSR1)
    {
        printf("received SIGUSR1\n");
    }
    else if(signo == SIGUSR2)
    {
        printf("received SIGUSR2\n");
    }
    else 
    {
        err_dump("received signal %d\n", signo);
    }
    return;
}